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linux_old1/drivers/media/video/s5p-jpeg/jpeg-core.c

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/* linux/drivers/media/video/s5p-jpeg/jpeg-core.c
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/gfp.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <media/v4l2-mem2mem.h>
#include <media/v4l2-ioctl.h>
#include <media/videobuf2-core.h>
#include <media/videobuf2-dma-contig.h>
#include "jpeg-core.h"
#include "jpeg-hw.h"
static struct s5p_jpeg_fmt formats_enc[] = {
{
.name = "JPEG JFIF",
.fourcc = V4L2_PIX_FMT_JPEG,
.colplanes = 1,
.types = MEM2MEM_CAPTURE,
},
{
.name = "YUV 4:2:2 packed, YCbYCr",
.fourcc = V4L2_PIX_FMT_YUYV,
.depth = 16,
.colplanes = 1,
.types = MEM2MEM_OUTPUT,
},
{
.name = "RGB565",
.fourcc = V4L2_PIX_FMT_RGB565,
.depth = 16,
.colplanes = 1,
.types = MEM2MEM_OUTPUT,
},
};
#define NUM_FORMATS_ENC ARRAY_SIZE(formats_enc)
static struct s5p_jpeg_fmt formats_dec[] = {
{
.name = "YUV 4:2:0 planar, YCbCr",
.fourcc = V4L2_PIX_FMT_YUV420,
.depth = 12,
.colplanes = 3,
.h_align = 4,
.v_align = 4,
.types = MEM2MEM_CAPTURE,
},
{
.name = "YUV 4:2:2 packed, YCbYCr",
.fourcc = V4L2_PIX_FMT_YUYV,
.depth = 16,
.colplanes = 1,
.h_align = 4,
.v_align = 3,
.types = MEM2MEM_CAPTURE,
},
{
.name = "JPEG JFIF",
.fourcc = V4L2_PIX_FMT_JPEG,
.colplanes = 1,
.types = MEM2MEM_OUTPUT,
},
};
#define NUM_FORMATS_DEC ARRAY_SIZE(formats_dec)
static const unsigned char qtbl_luminance[4][64] = {
{/* level 1 - high quality */
8, 6, 6, 8, 12, 14, 16, 17,
6, 6, 6, 8, 10, 13, 12, 15,
6, 6, 7, 8, 13, 14, 18, 24,
8, 8, 8, 14, 13, 19, 24, 35,
12, 10, 13, 13, 20, 26, 34, 39,
14, 13, 14, 19, 26, 34, 39, 39,
16, 12, 18, 24, 34, 39, 39, 39,
17, 15, 24, 35, 39, 39, 39, 39
},
{/* level 2 */
12, 8, 8, 12, 17, 21, 24, 23,
8, 9, 9, 11, 15, 19, 18, 23,
8, 9, 10, 12, 19, 20, 27, 36,
12, 11, 12, 21, 20, 28, 36, 53,
17, 15, 19, 20, 30, 39, 51, 59,
21, 19, 20, 28, 39, 51, 59, 59,
24, 18, 27, 36, 51, 59, 59, 59,
23, 23, 36, 53, 59, 59, 59, 59
},
{/* level 3 */
16, 11, 11, 16, 23, 27, 31, 30,
11, 12, 12, 15, 20, 23, 23, 30,
11, 12, 13, 16, 23, 26, 35, 47,
16, 15, 16, 23, 26, 37, 47, 64,
23, 20, 23, 26, 39, 51, 64, 64,
27, 23, 26, 37, 51, 64, 64, 64,
31, 23, 35, 47, 64, 64, 64, 64,
30, 30, 47, 64, 64, 64, 64, 64
},
{/*level 4 - low quality */
20, 16, 25, 39, 50, 46, 62, 68,
16, 18, 23, 38, 38, 53, 65, 68,
25, 23, 31, 38, 53, 65, 68, 68,
39, 38, 38, 53, 65, 68, 68, 68,
50, 38, 53, 65, 68, 68, 68, 68,
46, 53, 65, 68, 68, 68, 68, 68,
62, 65, 68, 68, 68, 68, 68, 68,
68, 68, 68, 68, 68, 68, 68, 68
}
};
static const unsigned char qtbl_chrominance[4][64] = {
{/* level 1 - high quality */
9, 8, 9, 11, 14, 17, 19, 24,
8, 10, 9, 11, 14, 13, 17, 22,
9, 9, 13, 14, 13, 15, 23, 26,
11, 11, 14, 14, 15, 20, 26, 33,
14, 14, 13, 15, 20, 24, 33, 39,
17, 13, 15, 20, 24, 32, 39, 39,
19, 17, 23, 26, 33, 39, 39, 39,
24, 22, 26, 33, 39, 39, 39, 39
},
{/* level 2 */
13, 11, 13, 16, 20, 20, 29, 37,
11, 14, 14, 14, 16, 20, 26, 32,
13, 14, 15, 17, 20, 23, 35, 40,
16, 14, 17, 21, 23, 30, 40, 50,
20, 16, 20, 23, 30, 37, 50, 59,
20, 20, 23, 30, 37, 48, 59, 59,
29, 26, 35, 40, 50, 59, 59, 59,
37, 32, 40, 50, 59, 59, 59, 59
},
{/* level 3 */
17, 15, 17, 21, 20, 26, 38, 48,
15, 19, 18, 17, 20, 26, 35, 43,
17, 18, 20, 22, 26, 30, 46, 53,
21, 17, 22, 28, 30, 39, 53, 64,
20, 20, 26, 30, 39, 48, 64, 64,
26, 26, 30, 39, 48, 63, 64, 64,
38, 35, 46, 53, 64, 64, 64, 64,
48, 43, 53, 64, 64, 64, 64, 64
},
{/*level 4 - low quality */
21, 25, 32, 38, 54, 68, 68, 68,
25, 28, 24, 38, 54, 68, 68, 68,
32, 24, 32, 43, 66, 68, 68, 68,
38, 38, 43, 53, 68, 68, 68, 68,
54, 54, 66, 68, 68, 68, 68, 68,
68, 68, 68, 68, 68, 68, 68, 68,
68, 68, 68, 68, 68, 68, 68, 68,
68, 68, 68, 68, 68, 68, 68, 68
}
};
static const unsigned char hdctbl0[16] = {
0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0
};
static const unsigned char hdctblg0[12] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xa, 0xb
};
static const unsigned char hactbl0[16] = {
0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d
};
static const unsigned char hactblg0[162] = {
0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
0xf9, 0xfa
};
static inline struct s5p_jpeg_ctx *ctrl_to_ctx(struct v4l2_ctrl *c)
{
return container_of(c->handler, struct s5p_jpeg_ctx, ctrl_handler);
}
static inline struct s5p_jpeg_ctx *fh_to_ctx(struct v4l2_fh *fh)
{
return container_of(fh, struct s5p_jpeg_ctx, fh);
}
static inline void jpeg_set_qtbl(void __iomem *regs, const unsigned char *qtbl,
unsigned long tab, int len)
{
int i;
for (i = 0; i < len; i++)
writel((unsigned int)qtbl[i], regs + tab + (i * 0x04));
}
static inline void jpeg_set_qtbl_lum(void __iomem *regs, int quality)
{
/* this driver fills quantisation table 0 with data for luma */
jpeg_set_qtbl(regs, qtbl_luminance[quality], S5P_JPG_QTBL_CONTENT(0),
ARRAY_SIZE(qtbl_luminance[quality]));
}
static inline void jpeg_set_qtbl_chr(void __iomem *regs, int quality)
{
/* this driver fills quantisation table 1 with data for chroma */
jpeg_set_qtbl(regs, qtbl_chrominance[quality], S5P_JPG_QTBL_CONTENT(1),
ARRAY_SIZE(qtbl_chrominance[quality]));
}
static inline void jpeg_set_htbl(void __iomem *regs, const unsigned char *htbl,
unsigned long tab, int len)
{
int i;
for (i = 0; i < len; i++)
writel((unsigned int)htbl[i], regs + tab + (i * 0x04));
}
static inline void jpeg_set_hdctbl(void __iomem *regs)
{
/* this driver fills table 0 for this component */
jpeg_set_htbl(regs, hdctbl0, S5P_JPG_HDCTBL(0), ARRAY_SIZE(hdctbl0));
}
static inline void jpeg_set_hdctblg(void __iomem *regs)
{
/* this driver fills table 0 for this component */
jpeg_set_htbl(regs, hdctblg0, S5P_JPG_HDCTBLG(0), ARRAY_SIZE(hdctblg0));
}
static inline void jpeg_set_hactbl(void __iomem *regs)
{
/* this driver fills table 0 for this component */
jpeg_set_htbl(regs, hactbl0, S5P_JPG_HACTBL(0), ARRAY_SIZE(hactbl0));
}
static inline void jpeg_set_hactblg(void __iomem *regs)
{
/* this driver fills table 0 for this component */
jpeg_set_htbl(regs, hactblg0, S5P_JPG_HACTBLG(0), ARRAY_SIZE(hactblg0));
}
/*
* ============================================================================
* Device file operations
* ============================================================================
*/
static int queue_init(void *priv, struct vb2_queue *src_vq,
struct vb2_queue *dst_vq);
static struct s5p_jpeg_fmt *s5p_jpeg_find_format(unsigned int mode,
__u32 pixelformat);
static int s5p_jpeg_controls_create(struct s5p_jpeg_ctx *ctx);
static int s5p_jpeg_open(struct file *file)
{
struct s5p_jpeg *jpeg = video_drvdata(file);
struct video_device *vfd = video_devdata(file);
struct s5p_jpeg_ctx *ctx;
struct s5p_jpeg_fmt *out_fmt;
int ret = 0;
ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
if (!ctx)
return -ENOMEM;
v4l2_fh_init(&ctx->fh, vfd);
/* Use separate control handler per file handle */
ctx->fh.ctrl_handler = &ctx->ctrl_handler;
file->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
ctx->jpeg = jpeg;
if (vfd == jpeg->vfd_encoder) {
ctx->mode = S5P_JPEG_ENCODE;
out_fmt = s5p_jpeg_find_format(ctx->mode, V4L2_PIX_FMT_RGB565);
} else {
ctx->mode = S5P_JPEG_DECODE;
out_fmt = s5p_jpeg_find_format(ctx->mode, V4L2_PIX_FMT_JPEG);
}
ret = s5p_jpeg_controls_create(ctx);
if (ret < 0)
goto error;
ctx->m2m_ctx = v4l2_m2m_ctx_init(jpeg->m2m_dev, ctx, queue_init);
if (IS_ERR(ctx->m2m_ctx)) {
ret = PTR_ERR(ctx->m2m_ctx);
goto error;
}
ctx->out_q.fmt = out_fmt;
ctx->cap_q.fmt = s5p_jpeg_find_format(ctx->mode, V4L2_PIX_FMT_YUYV);
return 0;
error:
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
return ret;
}
static int s5p_jpeg_release(struct file *file)
{
struct s5p_jpeg_ctx *ctx = fh_to_ctx(file->private_data);
v4l2_m2m_ctx_release(ctx->m2m_ctx);
v4l2_ctrl_handler_free(&ctx->ctrl_handler);
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
return 0;
}
static unsigned int s5p_jpeg_poll(struct file *file,
struct poll_table_struct *wait)
{
struct s5p_jpeg_ctx *ctx = fh_to_ctx(file->private_data);
return v4l2_m2m_poll(file, ctx->m2m_ctx, wait);
}
static int s5p_jpeg_mmap(struct file *file, struct vm_area_struct *vma)
{
struct s5p_jpeg_ctx *ctx = fh_to_ctx(file->private_data);
return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma);
}
static const struct v4l2_file_operations s5p_jpeg_fops = {
.owner = THIS_MODULE,
.open = s5p_jpeg_open,
.release = s5p_jpeg_release,
.poll = s5p_jpeg_poll,
.unlocked_ioctl = video_ioctl2,
.mmap = s5p_jpeg_mmap,
};
/*
* ============================================================================
* video ioctl operations
* ============================================================================
*/
static int get_byte(struct s5p_jpeg_buffer *buf)
{
if (buf->curr >= buf->size)
return -1;
return ((unsigned char *)buf->data)[buf->curr++];
}
static int get_word_be(struct s5p_jpeg_buffer *buf, unsigned int *word)
{
unsigned int temp;
int byte;
byte = get_byte(buf);
if (byte == -1)
return -1;
temp = byte << 8;
byte = get_byte(buf);
if (byte == -1)
return -1;
*word = (unsigned int)byte | temp;
return 0;
}
static void skip(struct s5p_jpeg_buffer *buf, long len)
{
if (len <= 0)
return;
while (len--)
get_byte(buf);
}
static bool s5p_jpeg_parse_hdr(struct s5p_jpeg_q_data *result,
unsigned long buffer, unsigned long size)
{
int c, components, notfound;
unsigned int height, width, word;
long length;
struct s5p_jpeg_buffer jpeg_buffer;
jpeg_buffer.size = size;
jpeg_buffer.data = buffer;
jpeg_buffer.curr = 0;
notfound = 1;
while (notfound) {
c = get_byte(&jpeg_buffer);
if (c == -1)
break;
if (c != 0xff)
continue;
do
c = get_byte(&jpeg_buffer);
while (c == 0xff);
if (c == -1)
break;
if (c == 0)
continue;
length = 0;
switch (c) {
/* SOF0: baseline JPEG */
case SOF0:
if (get_word_be(&jpeg_buffer, &word))
break;
if (get_byte(&jpeg_buffer) == -1)
break;
if (get_word_be(&jpeg_buffer, &height))
break;
if (get_word_be(&jpeg_buffer, &width))
break;
components = get_byte(&jpeg_buffer);
if (components == -1)
break;
notfound = 0;
skip(&jpeg_buffer, components * 3);
break;
/* skip payload-less markers */
case RST ... RST + 7:
case SOI:
case EOI:
case TEM:
break;
/* skip uninteresting payload markers */
default:
if (get_word_be(&jpeg_buffer, &word))
break;
length = (long)word - 2;
skip(&jpeg_buffer, length);
break;
}
}
result->w = width;
result->h = height;
result->size = components;
return !notfound;
}
static int s5p_jpeg_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv);
if (ctx->mode == S5P_JPEG_ENCODE) {
strlcpy(cap->driver, S5P_JPEG_M2M_NAME " encoder",
sizeof(cap->driver));
strlcpy(cap->card, S5P_JPEG_M2M_NAME " encoder",
sizeof(cap->card));
} else {
strlcpy(cap->driver, S5P_JPEG_M2M_NAME " decoder",
sizeof(cap->driver));
strlcpy(cap->card, S5P_JPEG_M2M_NAME " decoder",
sizeof(cap->card));
}
cap->bus_info[0] = 0;
cap->capabilities = V4L2_CAP_STREAMING |
V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_VIDEO_OUTPUT;
return 0;
}
static int enum_fmt(struct s5p_jpeg_fmt *formats, int n,
struct v4l2_fmtdesc *f, u32 type)
{
int i, num = 0;
for (i = 0; i < n; ++i) {
if (formats[i].types & type) {
/* index-th format of type type found ? */
if (num == f->index)
break;
/* Correct type but haven't reached our index yet,
* just increment per-type index */
++num;
}
}
/* Format not found */
if (i >= n)
return -EINVAL;
strlcpy(f->description, formats[i].name, sizeof(f->description));
f->pixelformat = formats[i].fourcc;
return 0;
}
static int s5p_jpeg_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv);
if (ctx->mode == S5P_JPEG_ENCODE)
return enum_fmt(formats_enc, NUM_FORMATS_ENC, f,
MEM2MEM_CAPTURE);
return enum_fmt(formats_dec, NUM_FORMATS_DEC, f, MEM2MEM_CAPTURE);
}
static int s5p_jpeg_enum_fmt_vid_out(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv);
if (ctx->mode == S5P_JPEG_ENCODE)
return enum_fmt(formats_enc, NUM_FORMATS_ENC, f,
MEM2MEM_OUTPUT);
return enum_fmt(formats_dec, NUM_FORMATS_DEC, f, MEM2MEM_OUTPUT);
}
static struct s5p_jpeg_q_data *get_q_data(struct s5p_jpeg_ctx *ctx,
enum v4l2_buf_type type)
{
if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
return &ctx->out_q;
if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
return &ctx->cap_q;
return NULL;
}
static int s5p_jpeg_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
{
struct vb2_queue *vq;
struct s5p_jpeg_q_data *q_data = NULL;
struct v4l2_pix_format *pix = &f->fmt.pix;
struct s5p_jpeg_ctx *ct = fh_to_ctx(priv);
vq = v4l2_m2m_get_vq(ct->m2m_ctx, f->type);
if (!vq)
return -EINVAL;
if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
ct->mode == S5P_JPEG_DECODE && !ct->hdr_parsed)
return -EINVAL;
q_data = get_q_data(ct, f->type);
BUG_ON(q_data == NULL);
pix->width = q_data->w;
pix->height = q_data->h;
pix->field = V4L2_FIELD_NONE;
pix->pixelformat = q_data->fmt->fourcc;
pix->bytesperline = 0;
if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG) {
u32 bpl = q_data->w;
if (q_data->fmt->colplanes == 1)
bpl = (bpl * q_data->fmt->depth) >> 3;
pix->bytesperline = bpl;
}
pix->sizeimage = q_data->size;
return 0;
}
static struct s5p_jpeg_fmt *s5p_jpeg_find_format(unsigned int mode,
u32 pixelformat)
{
unsigned int k;
struct s5p_jpeg_fmt *formats;
int n;
if (mode == S5P_JPEG_ENCODE) {
formats = formats_enc;
n = NUM_FORMATS_ENC;
} else {
formats = formats_dec;
n = NUM_FORMATS_DEC;
}
for (k = 0; k < n; k++) {
struct s5p_jpeg_fmt *fmt = &formats[k];
if (fmt->fourcc == pixelformat)
return fmt;
}
return NULL;
}
static void jpeg_bound_align_image(u32 *w, unsigned int wmin, unsigned int wmax,
unsigned int walign,
u32 *h, unsigned int hmin, unsigned int hmax,
unsigned int halign)
{
int width, height, w_step, h_step;
width = *w;
height = *h;
w_step = 1 << walign;
h_step = 1 << halign;
v4l_bound_align_image(w, wmin, wmax, walign, h, hmin, hmax, halign, 0);
if (*w < width && (*w + w_step) < wmax)
*w += w_step;
if (*h < height && (*h + h_step) < hmax)
*h += h_step;
}
static int vidioc_try_fmt(struct v4l2_format *f, struct s5p_jpeg_fmt *fmt,
struct s5p_jpeg_ctx *ctx, int q_type)
{
struct v4l2_pix_format *pix = &f->fmt.pix;
if (pix->field == V4L2_FIELD_ANY)
pix->field = V4L2_FIELD_NONE;
else if (pix->field != V4L2_FIELD_NONE)
return -EINVAL;
/* V4L2 specification suggests the driver corrects the format struct
* if any of the dimensions is unsupported */
if (q_type == MEM2MEM_OUTPUT)
jpeg_bound_align_image(&pix->width, S5P_JPEG_MIN_WIDTH,
S5P_JPEG_MAX_WIDTH, 0,
&pix->height, S5P_JPEG_MIN_HEIGHT,
S5P_JPEG_MAX_HEIGHT, 0);
else
jpeg_bound_align_image(&pix->width, S5P_JPEG_MIN_WIDTH,
S5P_JPEG_MAX_WIDTH, fmt->h_align,
&pix->height, S5P_JPEG_MIN_HEIGHT,
S5P_JPEG_MAX_HEIGHT, fmt->v_align);
if (fmt->fourcc == V4L2_PIX_FMT_JPEG) {
if (pix->sizeimage <= 0)
pix->sizeimage = PAGE_SIZE;
pix->bytesperline = 0;
} else {
u32 bpl = pix->bytesperline;
if (fmt->colplanes > 1 && bpl < pix->width)
bpl = pix->width; /* planar */
if (fmt->colplanes == 1 && /* packed */
(bpl << 3) * fmt->depth < pix->width)
bpl = (pix->width * fmt->depth) >> 3;
pix->bytesperline = bpl;
pix->sizeimage = (pix->width * pix->height * fmt->depth) >> 3;
}
return 0;
}
static int s5p_jpeg_try_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv);
struct s5p_jpeg_fmt *fmt;
fmt = s5p_jpeg_find_format(ctx->mode, f->fmt.pix.pixelformat);
if (!fmt || !(fmt->types & MEM2MEM_CAPTURE)) {
v4l2_err(&ctx->jpeg->v4l2_dev,
"Fourcc format (0x%08x) invalid.\n",
f->fmt.pix.pixelformat);
return -EINVAL;
}
return vidioc_try_fmt(f, fmt, ctx, MEM2MEM_CAPTURE);
}
static int s5p_jpeg_try_fmt_vid_out(struct file *file, void *priv,
struct v4l2_format *f)
{
struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv);
struct s5p_jpeg_fmt *fmt;
fmt = s5p_jpeg_find_format(ctx->mode, f->fmt.pix.pixelformat);
if (!fmt || !(fmt->types & MEM2MEM_OUTPUT)) {
v4l2_err(&ctx->jpeg->v4l2_dev,
"Fourcc format (0x%08x) invalid.\n",
f->fmt.pix.pixelformat);
return -EINVAL;
}
return vidioc_try_fmt(f, fmt, ctx, MEM2MEM_OUTPUT);
}
static int s5p_jpeg_s_fmt(struct s5p_jpeg_ctx *ct, struct v4l2_format *f)
{
struct vb2_queue *vq;
struct s5p_jpeg_q_data *q_data = NULL;
struct v4l2_pix_format *pix = &f->fmt.pix;
vq = v4l2_m2m_get_vq(ct->m2m_ctx, f->type);
if (!vq)
return -EINVAL;
q_data = get_q_data(ct, f->type);
BUG_ON(q_data == NULL);
if (vb2_is_busy(vq)) {
v4l2_err(&ct->jpeg->v4l2_dev, "%s queue busy\n", __func__);
return -EBUSY;
}
q_data->fmt = s5p_jpeg_find_format(ct->mode, pix->pixelformat);
q_data->w = pix->width;
q_data->h = pix->height;
if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG)
q_data->size = q_data->w * q_data->h * q_data->fmt->depth >> 3;
else
q_data->size = pix->sizeimage;
return 0;
}
static int s5p_jpeg_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
int ret;
ret = s5p_jpeg_try_fmt_vid_cap(file, priv, f);
if (ret)
return ret;
return s5p_jpeg_s_fmt(fh_to_ctx(priv), f);
}
static int s5p_jpeg_s_fmt_vid_out(struct file *file, void *priv,
struct v4l2_format *f)
{
int ret;
ret = s5p_jpeg_try_fmt_vid_out(file, priv, f);
if (ret)
return ret;
return s5p_jpeg_s_fmt(fh_to_ctx(priv), f);
}
static int s5p_jpeg_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *reqbufs)
{
struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv);
return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);
}
static int s5p_jpeg_querybuf(struct file *file, void *priv,
struct v4l2_buffer *buf)
{
struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv);
return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);
}
static int s5p_jpeg_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
{
struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv);
return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
}
static int s5p_jpeg_dqbuf(struct file *file, void *priv,
struct v4l2_buffer *buf)
{
struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv);
return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
}
static int s5p_jpeg_streamon(struct file *file, void *priv,
enum v4l2_buf_type type)
{
struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv);
return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
}
static int s5p_jpeg_streamoff(struct file *file, void *priv,
enum v4l2_buf_type type)
{
struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv);
return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type);
}
int s5p_jpeg_g_selection(struct file *file, void *priv,
struct v4l2_selection *s)
{
struct s5p_jpeg_ctx *ctx = fh_to_ctx(priv);
if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT &&
s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
/* For JPEG blob active == default == bounds */
switch (s->target) {
case V4L2_SEL_TGT_CROP_ACTIVE:
case V4L2_SEL_TGT_CROP_BOUNDS:
case V4L2_SEL_TGT_CROP_DEFAULT:
case V4L2_SEL_TGT_COMPOSE_ACTIVE:
case V4L2_SEL_TGT_COMPOSE_DEFAULT:
s->r.width = ctx->out_q.w;
s->r.height = ctx->out_q.h;
break;
case V4L2_SEL_TGT_COMPOSE_BOUNDS:
case V4L2_SEL_TGT_COMPOSE_PADDED:
s->r.width = ctx->cap_q.w;
s->r.height = ctx->cap_q.h;
break;
default:
return -EINVAL;
}
s->r.left = 0;
s->r.top = 0;
return 0;
}
/*
* V4L2 controls
*/
static int s5p_jpeg_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
struct s5p_jpeg_ctx *ctx = ctrl_to_ctx(ctrl);
struct s5p_jpeg *jpeg = ctx->jpeg;
unsigned long flags;
switch (ctrl->id) {
case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:
spin_lock_irqsave(&jpeg->slock, flags);
WARN_ON(ctx->subsampling > S5P_SUBSAMPLING_MODE_GRAY);
if (ctx->subsampling > 2)
ctrl->val = V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY;
else
ctrl->val = ctx->subsampling;
spin_unlock_irqrestore(&jpeg->slock, flags);
break;
}
return 0;
}
static int s5p_jpeg_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct s5p_jpeg_ctx *ctx = ctrl_to_ctx(ctrl);
unsigned long flags;
spin_lock_irqsave(&ctx->jpeg->slock, flags);
switch (ctrl->id) {
case V4L2_CID_JPEG_COMPRESSION_QUALITY:
ctx->compr_quality = S5P_JPEG_COMPR_QUAL_WORST - ctrl->val;
break;
case V4L2_CID_JPEG_RESTART_INTERVAL:
ctx->restart_interval = ctrl->val;
break;
case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:
ctx->subsampling = ctrl->val;
break;
}
spin_unlock_irqrestore(&ctx->jpeg->slock, flags);
return 0;
}
static const struct v4l2_ctrl_ops s5p_jpeg_ctrl_ops = {
.g_volatile_ctrl = s5p_jpeg_g_volatile_ctrl,
.s_ctrl = s5p_jpeg_s_ctrl,
};
static int s5p_jpeg_controls_create(struct s5p_jpeg_ctx *ctx)
{
unsigned int mask = ~0x27; /* 444, 422, 420, GRAY */
struct v4l2_ctrl *ctrl;
v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
if (ctx->mode == S5P_JPEG_ENCODE) {
v4l2_ctrl_new_std(&ctx->ctrl_handler, &s5p_jpeg_ctrl_ops,
V4L2_CID_JPEG_COMPRESSION_QUALITY,
0, 3, 1, 3);
v4l2_ctrl_new_std(&ctx->ctrl_handler, &s5p_jpeg_ctrl_ops,
V4L2_CID_JPEG_RESTART_INTERVAL,
0, 3, 0xffff, 0);
mask = ~0x06; /* 422, 420 */
}
ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrl_handler, &s5p_jpeg_ctrl_ops,
V4L2_CID_JPEG_CHROMA_SUBSAMPLING,
V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY, mask,
V4L2_JPEG_CHROMA_SUBSAMPLING_422);
if (ctx->ctrl_handler.error)
return ctx->ctrl_handler.error;
if (ctx->mode == S5P_JPEG_DECODE)
ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE |
V4L2_CTRL_FLAG_READ_ONLY;
return 0;
}
static const struct v4l2_ioctl_ops s5p_jpeg_ioctl_ops = {
.vidioc_querycap = s5p_jpeg_querycap,
.vidioc_enum_fmt_vid_cap = s5p_jpeg_enum_fmt_vid_cap,
.vidioc_enum_fmt_vid_out = s5p_jpeg_enum_fmt_vid_out,
.vidioc_g_fmt_vid_cap = s5p_jpeg_g_fmt,
.vidioc_g_fmt_vid_out = s5p_jpeg_g_fmt,
.vidioc_try_fmt_vid_cap = s5p_jpeg_try_fmt_vid_cap,
.vidioc_try_fmt_vid_out = s5p_jpeg_try_fmt_vid_out,
.vidioc_s_fmt_vid_cap = s5p_jpeg_s_fmt_vid_cap,
.vidioc_s_fmt_vid_out = s5p_jpeg_s_fmt_vid_out,
.vidioc_reqbufs = s5p_jpeg_reqbufs,
.vidioc_querybuf = s5p_jpeg_querybuf,
.vidioc_qbuf = s5p_jpeg_qbuf,
.vidioc_dqbuf = s5p_jpeg_dqbuf,
.vidioc_streamon = s5p_jpeg_streamon,
.vidioc_streamoff = s5p_jpeg_streamoff,
.vidioc_g_selection = s5p_jpeg_g_selection,
};
/*
* ============================================================================
* mem2mem callbacks
* ============================================================================
*/
static void s5p_jpeg_device_run(void *priv)
{
struct s5p_jpeg_ctx *ctx = priv;
struct s5p_jpeg *jpeg = ctx->jpeg;
struct vb2_buffer *src_buf, *dst_buf;
unsigned long src_addr, dst_addr;
src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
src_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
dst_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
jpeg_reset(jpeg->regs);
jpeg_poweron(jpeg->regs);
jpeg_proc_mode(jpeg->regs, ctx->mode);
if (ctx->mode == S5P_JPEG_ENCODE) {
if (ctx->out_q.fmt->fourcc == V4L2_PIX_FMT_RGB565)
jpeg_input_raw_mode(jpeg->regs, S5P_JPEG_RAW_IN_565);
else
jpeg_input_raw_mode(jpeg->regs, S5P_JPEG_RAW_IN_422);
jpeg_subsampling_mode(jpeg->regs, ctx->subsampling);
jpeg_dri(jpeg->regs, ctx->restart_interval);
jpeg_x(jpeg->regs, ctx->out_q.w);
jpeg_y(jpeg->regs, ctx->out_q.h);
jpeg_imgadr(jpeg->regs, src_addr);
jpeg_jpgadr(jpeg->regs, dst_addr);
/* ultimately comes from sizeimage from userspace */
jpeg_enc_stream_int(jpeg->regs, ctx->cap_q.size);
/* JPEG RGB to YCbCr conversion matrix */
jpeg_coef(jpeg->regs, 1, 1, S5P_JPEG_COEF11);
jpeg_coef(jpeg->regs, 1, 2, S5P_JPEG_COEF12);
jpeg_coef(jpeg->regs, 1, 3, S5P_JPEG_COEF13);
jpeg_coef(jpeg->regs, 2, 1, S5P_JPEG_COEF21);
jpeg_coef(jpeg->regs, 2, 2, S5P_JPEG_COEF22);
jpeg_coef(jpeg->regs, 2, 3, S5P_JPEG_COEF23);
jpeg_coef(jpeg->regs, 3, 1, S5P_JPEG_COEF31);
jpeg_coef(jpeg->regs, 3, 2, S5P_JPEG_COEF32);
jpeg_coef(jpeg->regs, 3, 3, S5P_JPEG_COEF33);
/*
* JPEG IP allows storing 4 quantization tables
* We fill table 0 for luma and table 1 for chroma
*/
jpeg_set_qtbl_lum(jpeg->regs, ctx->compr_quality);
jpeg_set_qtbl_chr(jpeg->regs, ctx->compr_quality);
/* use table 0 for Y */
jpeg_qtbl(jpeg->regs, 1, 0);
/* use table 1 for Cb and Cr*/
jpeg_qtbl(jpeg->regs, 2, 1);
jpeg_qtbl(jpeg->regs, 3, 1);
/* Y, Cb, Cr use Huffman table 0 */
jpeg_htbl_ac(jpeg->regs, 1);
jpeg_htbl_dc(jpeg->regs, 1);
jpeg_htbl_ac(jpeg->regs, 2);
jpeg_htbl_dc(jpeg->regs, 2);
jpeg_htbl_ac(jpeg->regs, 3);
jpeg_htbl_dc(jpeg->regs, 3);
} else { /* S5P_JPEG_DECODE */
jpeg_rst_int_enable(jpeg->regs, true);
jpeg_data_num_int_enable(jpeg->regs, true);
jpeg_final_mcu_num_int_enable(jpeg->regs, true);
if (ctx->cap_q.fmt->fourcc == V4L2_PIX_FMT_YUYV)
jpeg_outform_raw(jpeg->regs, S5P_JPEG_RAW_OUT_422);
else
jpeg_outform_raw(jpeg->regs, S5P_JPEG_RAW_OUT_420);
jpeg_jpgadr(jpeg->regs, src_addr);
jpeg_imgadr(jpeg->regs, dst_addr);
}
jpeg_start(jpeg->regs);
}
static int s5p_jpeg_job_ready(void *priv)
{
struct s5p_jpeg_ctx *ctx = priv;
if (ctx->mode == S5P_JPEG_DECODE)
return ctx->hdr_parsed;
return 1;
}
static void s5p_jpeg_job_abort(void *priv)
{
}
static struct v4l2_m2m_ops s5p_jpeg_m2m_ops = {
.device_run = s5p_jpeg_device_run,
.job_ready = s5p_jpeg_job_ready,
.job_abort = s5p_jpeg_job_abort,
};
/*
* ============================================================================
* Queue operations
* ============================================================================
*/
static int s5p_jpeg_queue_setup(struct vb2_queue *vq,
const struct v4l2_format *fmt,
unsigned int *nbuffers, unsigned int *nplanes,
unsigned int sizes[], void *alloc_ctxs[])
{
struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vq);
struct s5p_jpeg_q_data *q_data = NULL;
unsigned int size, count = *nbuffers;
q_data = get_q_data(ctx, vq->type);
BUG_ON(q_data == NULL);
size = q_data->size;
/*
* header is parsed during decoding and parsed information stored
* in the context so we do not allow another buffer to overwrite it
*/
if (ctx->mode == S5P_JPEG_DECODE)
count = 1;
*nbuffers = count;
*nplanes = 1;
sizes[0] = size;
alloc_ctxs[0] = ctx->jpeg->alloc_ctx;
return 0;
}
static int s5p_jpeg_buf_prepare(struct vb2_buffer *vb)
{
struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
struct s5p_jpeg_q_data *q_data = NULL;
q_data = get_q_data(ctx, vb->vb2_queue->type);
BUG_ON(q_data == NULL);
if (vb2_plane_size(vb, 0) < q_data->size) {
pr_err("%s data will not fit into plane (%lu < %lu)\n",
__func__, vb2_plane_size(vb, 0),
(long)q_data->size);
return -EINVAL;
}
vb2_set_plane_payload(vb, 0, q_data->size);
return 0;
}
static void s5p_jpeg_buf_queue(struct vb2_buffer *vb)
{
struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
if (ctx->mode == S5P_JPEG_DECODE &&
vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
struct s5p_jpeg_q_data tmp, *q_data;
ctx->hdr_parsed = s5p_jpeg_parse_hdr(&tmp,
(unsigned long)vb2_plane_vaddr(vb, 0),
min((unsigned long)ctx->out_q.size,
vb2_get_plane_payload(vb, 0)));
if (!ctx->hdr_parsed) {
vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
return;
}
q_data = &ctx->out_q;
q_data->w = tmp.w;
q_data->h = tmp.h;
q_data = &ctx->cap_q;
q_data->w = tmp.w;
q_data->h = tmp.h;
jpeg_bound_align_image(&q_data->w, S5P_JPEG_MIN_WIDTH,
S5P_JPEG_MAX_WIDTH, q_data->fmt->h_align,
&q_data->h, S5P_JPEG_MIN_HEIGHT,
S5P_JPEG_MAX_HEIGHT, q_data->fmt->v_align
);
q_data->size = q_data->w * q_data->h * q_data->fmt->depth >> 3;
}
if (ctx->m2m_ctx)
v4l2_m2m_buf_queue(ctx->m2m_ctx, vb);
}
static void s5p_jpeg_wait_prepare(struct vb2_queue *vq)
{
struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vq);
mutex_unlock(&ctx->jpeg->lock);
}
static void s5p_jpeg_wait_finish(struct vb2_queue *vq)
{
struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vq);
mutex_lock(&ctx->jpeg->lock);
}
static int s5p_jpeg_start_streaming(struct vb2_queue *q, unsigned int count)
{
struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(q);
int ret;
ret = pm_runtime_get_sync(ctx->jpeg->dev);
return ret > 0 ? 0 : ret;
}
static int s5p_jpeg_stop_streaming(struct vb2_queue *q)
{
struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(q);
pm_runtime_put(ctx->jpeg->dev);
return 0;
}
static struct vb2_ops s5p_jpeg_qops = {
.queue_setup = s5p_jpeg_queue_setup,
.buf_prepare = s5p_jpeg_buf_prepare,
.buf_queue = s5p_jpeg_buf_queue,
.wait_prepare = s5p_jpeg_wait_prepare,
.wait_finish = s5p_jpeg_wait_finish,
.start_streaming = s5p_jpeg_start_streaming,
.stop_streaming = s5p_jpeg_stop_streaming,
};
static int queue_init(void *priv, struct vb2_queue *src_vq,
struct vb2_queue *dst_vq)
{
struct s5p_jpeg_ctx *ctx = priv;
int ret;
memset(src_vq, 0, sizeof(*src_vq));
src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
src_vq->drv_priv = ctx;
src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
src_vq->ops = &s5p_jpeg_qops;
src_vq->mem_ops = &vb2_dma_contig_memops;
ret = vb2_queue_init(src_vq);
if (ret)
return ret;
memset(dst_vq, 0, sizeof(*dst_vq));
dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
dst_vq->drv_priv = ctx;
dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
dst_vq->ops = &s5p_jpeg_qops;
dst_vq->mem_ops = &vb2_dma_contig_memops;
return vb2_queue_init(dst_vq);
}
/*
* ============================================================================
* ISR
* ============================================================================
*/
static irqreturn_t s5p_jpeg_irq(int irq, void *dev_id)
{
struct s5p_jpeg *jpeg = dev_id;
struct s5p_jpeg_ctx *curr_ctx;
struct vb2_buffer *src_buf, *dst_buf;
unsigned long payload_size = 0;
enum vb2_buffer_state state = VB2_BUF_STATE_DONE;
bool enc_jpeg_too_large = false;
bool timer_elapsed = false;
bool op_completed = false;
spin_lock(&jpeg->slock);
curr_ctx = v4l2_m2m_get_curr_priv(jpeg->m2m_dev);
src_buf = v4l2_m2m_src_buf_remove(curr_ctx->m2m_ctx);
dst_buf = v4l2_m2m_dst_buf_remove(curr_ctx->m2m_ctx);
if (curr_ctx->mode == S5P_JPEG_ENCODE)
enc_jpeg_too_large = jpeg_enc_stream_stat(jpeg->regs);
timer_elapsed = jpeg_timer_stat(jpeg->regs);
op_completed = jpeg_result_stat_ok(jpeg->regs);
if (curr_ctx->mode == S5P_JPEG_DECODE)
op_completed = op_completed && jpeg_stream_stat_ok(jpeg->regs);
if (enc_jpeg_too_large) {
state = VB2_BUF_STATE_ERROR;
jpeg_clear_enc_stream_stat(jpeg->regs);
} else if (timer_elapsed) {
state = VB2_BUF_STATE_ERROR;
jpeg_clear_timer_stat(jpeg->regs);
} else if (!op_completed) {
state = VB2_BUF_STATE_ERROR;
} else {
payload_size = jpeg_compressed_size(jpeg->regs);
}
v4l2_m2m_buf_done(src_buf, state);
if (curr_ctx->mode == S5P_JPEG_ENCODE)
vb2_set_plane_payload(dst_buf, 0, payload_size);
v4l2_m2m_buf_done(dst_buf, state);
v4l2_m2m_job_finish(jpeg->m2m_dev, curr_ctx->m2m_ctx);
curr_ctx->subsampling = jpeg_get_subsampling_mode(jpeg->regs);
spin_unlock(&jpeg->slock);
jpeg_clear_int(jpeg->regs);
return IRQ_HANDLED;
}
/*
* ============================================================================
* Driver basic infrastructure
* ============================================================================
*/
static int s5p_jpeg_probe(struct platform_device *pdev)
{
struct s5p_jpeg *jpeg;
struct resource *res;
int ret;
/* JPEG IP abstraction struct */
jpeg = kzalloc(sizeof(struct s5p_jpeg), GFP_KERNEL);
if (!jpeg)
return -ENOMEM;
mutex_init(&jpeg->lock);
spin_lock_init(&jpeg->slock);
jpeg->dev = &pdev->dev;
/* memory-mapped registers */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "cannot find IO resource\n");
ret = -ENOENT;
goto jpeg_alloc_rollback;
}
jpeg->ioarea = request_mem_region(res->start, resource_size(res),
pdev->name);
if (!jpeg->ioarea) {
dev_err(&pdev->dev, "cannot request IO\n");
ret = -ENXIO;
goto jpeg_alloc_rollback;
}
jpeg->regs = ioremap(res->start, resource_size(res));
if (!jpeg->regs) {
dev_err(&pdev->dev, "cannot map IO\n");
ret = -ENXIO;
goto mem_region_rollback;
}
dev_dbg(&pdev->dev, "registers %p (%p, %p)\n",
jpeg->regs, jpeg->ioarea, res);
/* interrupt service routine registration */
jpeg->irq = ret = platform_get_irq(pdev, 0);
if (ret < 0) {
dev_err(&pdev->dev, "cannot find IRQ\n");
goto ioremap_rollback;
}
ret = request_irq(jpeg->irq, s5p_jpeg_irq, 0,
dev_name(&pdev->dev), jpeg);
if (ret) {
dev_err(&pdev->dev, "cannot claim IRQ %d\n", jpeg->irq);
goto ioremap_rollback;
}
/* clocks */
jpeg->clk = clk_get(&pdev->dev, "jpeg");
if (IS_ERR(jpeg->clk)) {
dev_err(&pdev->dev, "cannot get clock\n");
ret = PTR_ERR(jpeg->clk);
goto request_irq_rollback;
}
dev_dbg(&pdev->dev, "clock source %p\n", jpeg->clk);
clk_enable(jpeg->clk);
/* v4l2 device */
ret = v4l2_device_register(&pdev->dev, &jpeg->v4l2_dev);
if (ret) {
dev_err(&pdev->dev, "Failed to register v4l2 device\n");
goto clk_get_rollback;
}
/* mem2mem device */
jpeg->m2m_dev = v4l2_m2m_init(&s5p_jpeg_m2m_ops);
if (IS_ERR(jpeg->m2m_dev)) {
v4l2_err(&jpeg->v4l2_dev, "Failed to init mem2mem device\n");
ret = PTR_ERR(jpeg->m2m_dev);
goto device_register_rollback;
}
jpeg->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
if (IS_ERR(jpeg->alloc_ctx)) {
v4l2_err(&jpeg->v4l2_dev, "Failed to init memory allocator\n");
ret = PTR_ERR(jpeg->alloc_ctx);
goto m2m_init_rollback;
}
/* JPEG encoder /dev/videoX node */
jpeg->vfd_encoder = video_device_alloc();
if (!jpeg->vfd_encoder) {
v4l2_err(&jpeg->v4l2_dev, "Failed to allocate video device\n");
ret = -ENOMEM;
goto vb2_allocator_rollback;
}
strlcpy(jpeg->vfd_encoder->name, S5P_JPEG_M2M_NAME,
sizeof(jpeg->vfd_encoder->name));
jpeg->vfd_encoder->fops = &s5p_jpeg_fops;
jpeg->vfd_encoder->ioctl_ops = &s5p_jpeg_ioctl_ops;
jpeg->vfd_encoder->minor = -1;
jpeg->vfd_encoder->release = video_device_release;
jpeg->vfd_encoder->lock = &jpeg->lock;
jpeg->vfd_encoder->v4l2_dev = &jpeg->v4l2_dev;
ret = video_register_device(jpeg->vfd_encoder, VFL_TYPE_GRABBER, -1);
if (ret) {
v4l2_err(&jpeg->v4l2_dev, "Failed to register video device\n");
goto enc_vdev_alloc_rollback;
}
video_set_drvdata(jpeg->vfd_encoder, jpeg);
v4l2_info(&jpeg->v4l2_dev,
"encoder device registered as /dev/video%d\n",
jpeg->vfd_encoder->num);
/* JPEG decoder /dev/videoX node */
jpeg->vfd_decoder = video_device_alloc();
if (!jpeg->vfd_decoder) {
v4l2_err(&jpeg->v4l2_dev, "Failed to allocate video device\n");
ret = -ENOMEM;
goto enc_vdev_register_rollback;
}
strlcpy(jpeg->vfd_decoder->name, S5P_JPEG_M2M_NAME,
sizeof(jpeg->vfd_decoder->name));
jpeg->vfd_decoder->fops = &s5p_jpeg_fops;
jpeg->vfd_decoder->ioctl_ops = &s5p_jpeg_ioctl_ops;
jpeg->vfd_decoder->minor = -1;
jpeg->vfd_decoder->release = video_device_release;
jpeg->vfd_decoder->lock = &jpeg->lock;
jpeg->vfd_decoder->v4l2_dev = &jpeg->v4l2_dev;
ret = video_register_device(jpeg->vfd_decoder, VFL_TYPE_GRABBER, -1);
if (ret) {
v4l2_err(&jpeg->v4l2_dev, "Failed to register video device\n");
goto dec_vdev_alloc_rollback;
}
video_set_drvdata(jpeg->vfd_decoder, jpeg);
v4l2_info(&jpeg->v4l2_dev,
"decoder device registered as /dev/video%d\n",
jpeg->vfd_decoder->num);
/* final statements & power management */
platform_set_drvdata(pdev, jpeg);
pm_runtime_enable(&pdev->dev);
v4l2_info(&jpeg->v4l2_dev, "Samsung S5P JPEG codec\n");
return 0;
dec_vdev_alloc_rollback:
video_device_release(jpeg->vfd_decoder);
enc_vdev_register_rollback:
video_unregister_device(jpeg->vfd_encoder);
enc_vdev_alloc_rollback:
video_device_release(jpeg->vfd_encoder);
vb2_allocator_rollback:
vb2_dma_contig_cleanup_ctx(jpeg->alloc_ctx);
m2m_init_rollback:
v4l2_m2m_release(jpeg->m2m_dev);
device_register_rollback:
v4l2_device_unregister(&jpeg->v4l2_dev);
clk_get_rollback:
clk_disable(jpeg->clk);
clk_put(jpeg->clk);
request_irq_rollback:
free_irq(jpeg->irq, jpeg);
ioremap_rollback:
iounmap(jpeg->regs);
mem_region_rollback:
release_resource(jpeg->ioarea);
release_mem_region(jpeg->ioarea->start, resource_size(jpeg->ioarea));
jpeg_alloc_rollback:
kfree(jpeg);
return ret;
}
static int s5p_jpeg_remove(struct platform_device *pdev)
{
struct s5p_jpeg *jpeg = platform_get_drvdata(pdev);
pm_runtime_disable(jpeg->dev);
video_unregister_device(jpeg->vfd_decoder);
video_device_release(jpeg->vfd_decoder);
video_unregister_device(jpeg->vfd_encoder);
video_device_release(jpeg->vfd_encoder);
vb2_dma_contig_cleanup_ctx(jpeg->alloc_ctx);
v4l2_m2m_release(jpeg->m2m_dev);
v4l2_device_unregister(&jpeg->v4l2_dev);
clk_disable(jpeg->clk);
clk_put(jpeg->clk);
free_irq(jpeg->irq, jpeg);
iounmap(jpeg->regs);
release_resource(jpeg->ioarea);
release_mem_region(jpeg->ioarea->start, resource_size(jpeg->ioarea));
kfree(jpeg);
return 0;
}
static int s5p_jpeg_runtime_suspend(struct device *dev)
{
return 0;
}
static int s5p_jpeg_runtime_resume(struct device *dev)
{
struct s5p_jpeg *jpeg = dev_get_drvdata(dev);
/*
* JPEG IP allows storing two Huffman tables for each component
* We fill table 0 for each component
*/
jpeg_set_hdctbl(jpeg->regs);
jpeg_set_hdctblg(jpeg->regs);
jpeg_set_hactbl(jpeg->regs);
jpeg_set_hactblg(jpeg->regs);
return 0;
}
static const struct dev_pm_ops s5p_jpeg_pm_ops = {
.runtime_suspend = s5p_jpeg_runtime_suspend,
.runtime_resume = s5p_jpeg_runtime_resume,
};
static struct platform_driver s5p_jpeg_driver = {
.probe = s5p_jpeg_probe,
.remove = s5p_jpeg_remove,
.driver = {
.owner = THIS_MODULE,
.name = S5P_JPEG_M2M_NAME,
.pm = &s5p_jpeg_pm_ops,
},
};
static int __init
s5p_jpeg_register(void)
{
int ret;
pr_info("S5P JPEG V4L2 Driver, (c) 2011 Samsung Electronics\n");
ret = platform_driver_register(&s5p_jpeg_driver);
if (ret)
pr_err("%s: failed to register jpeg driver\n", __func__);
return ret;
}
static void __exit
s5p_jpeg_unregister(void)
{
platform_driver_unregister(&s5p_jpeg_driver);
}
module_init(s5p_jpeg_register);
module_exit(s5p_jpeg_unregister);
MODULE_AUTHOR("Andrzej Pietrasiewicz <andrzej.p@samsung.com>");
MODULE_DESCRIPTION("Samsung JPEG codec driver");
MODULE_LICENSE("GPL");
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